This function is called on each incoming RTCP payload.
Bug: webrtc:10395
Change-Id: I164746fe45912cc503565e77046b5d884e0204e6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127122
Commit-Queue: Benjamin Wright <benwright@webrtc.org>
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27110}